A google search for this leads to lots of posts which complain about this error with JDK5. Some suggest anonymous wrote : adding 127.0.0.1 localhost in /etc/hosts and some others suggest anonymous wrote : The key is to have the JDK 1.5 beta *JRE* bin directory | listed in your path. (make sure it comes before any | other JREs). | I even found some posts which mention that this might be because of the firewall installed on the system (try disabling it, if you have one). See if any of these work for you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4102310#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...